In part II, titled “Neurology,” and part III, titled “Psychiatry,” description of the respective examinations and evolution of subspecialties is provided. In neurology, advances in neuroimaging and other diagnostic and treatment options contributed to the development of subspecialties such as stroke, neuromuscular, and neonatal medicine. In psychiatry, the effect of the increase in addiction-related hospital visits, the growth of the aging population, and public attention to high-profile legal cases were factors in the evolution of the subspecialties of addiction, geriatric, and forensic psychiatry. Opponents of additional subspecialties, however, cite concerns about specialty fragmentation and the dilution of broad clinical training.